Thread-cutting device.



Y R. WILD.

THREAD CUTTING DEVICE.

APPLIUATION FILED 11211.12, 1911. RENEWBD SEPT. 5, 1913.

1 9O9 1 ,4; 1 2 Patented Mar. 24, 1914 spective view of m RUDOLF WILD, 0F LOS ANGELES, CALIFORNIA.

THREAD-CUTTING DEVICE.

Specification of Letters Patent.

Patented Mar. 24, 1914.

Application led April 12, 1911, Serial No. 620,624..I Renewed September 5, 1913. SerialNo. 788,321.

To all whom it may concern.'

Be it known that I, RUDOLF WILD, a cit1- zen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Thread- Cuttin Devices; and I do herebydeclare the fol owing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in thread cutting devices.

An object of this invention is a provision of an `inexpensive and eiicient device which may be very easily manufactured and attached to rings, thimbles, etc., for the purpose of providing a means for cutting thread or the like.

A particular advantage of this invention over devices of similar nature is the fact that the blades may be very readily manufactured from wire or the ike, .thus reducin the expense to the minimum.

`Ilith the above and various other objects in view, which will be more particularly brought out in the following description, this invention resides in the novel features of construction, formations, combinations and arrangements of parts to behereinafter more fully described, claimed and illustrated in the accompanying drawing in which;

Figure l is a perspective view of my invention applied to a ring; Fig. 2 is a vertical sectional view thereof; Fig. 3 is a horizontal sectional view taken on the line 3--3 of Fig. 2; Fig. 4 is a detailed side elevation of the blade removed; Fig. 5 is a detailed perdevice used in connection with a. thimb e, and Fig. 6 is a sectional view taken on the line 6-6 of Fig. 5.

Referring to the drawing by similar characters of reference throughout the several views, the numeral 1 designates generally a spring .device for my improved attachment which consists preferably in the form of either a ring or a thimble, it being understood, however, that the same may be applied to any suitable device to which the nature of the attachment may be adapted.' A raised head 2 is formed upon one side of the supporting device and serves for the purpose of retaining in its proper position the thread cutting tool 3. This tool 3 is inserted in the head 2 diagonally to the plane of the supporting device. A screw'4 is threaded in an aperture located in one side of the head and engages the tool 3 for the purpose of securely retaining the same in its proper position against any undesired displacement. A slot 5 is located in the head 2 the said, slot being of a sutiicient width to permit of the passage of a thread or the like therethrough and also serving as a guide to force the same against the cutting edge of the tool. The principal advantage of placing the cutting tool at an angle with respect to the supporting device is that in forcing the thread into en gement with the cutting edge thereof it wi l have a tendency to sever the fibers of the thread at an angle and thereby more readily accomplish the desired results.

In manufacturing the tool, the same may be formed from strands of Ywire by merely grinding the end as clearly illustrated in the rawing to provide a concaved cuttin edge.

From the foregoing disclosures ta en in connection with the accompanying drawing it will be vmanifest that a cutting attachment for rings, thimbles or the like is provided for which will fulfil all the necessary requirements for such a device.

Having thus fully described this invention what I'claim as new and desire to protect by Letters Patent is:

A ring provided with a thread cutting device comprising a flat head formed on said ring, said head having-an opening rectanguh lar in cross section and whose side walls lie in planes perpendicular to the base of said fiat head, the head also having Aan opening Y therein at right angles to the first mentioned opening, a cutting tool inserted in the first mentioned opening, the last mentioned openin having a set screw mounted therein adapted to engage said cutting tool and hold it in position, andthe head provided with a circumferential `groove intersecting the first mentioned opening.

In testimony whereof I ailix my signature in presencev of two witnesses.

RUDOLF WILD.

Witnesses Ismon D. Braun, J. E. MArrrsoN. 

